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Author Topic: Fiorotti V6.3 Timer (G-Force Setting)  (Read 963 times)

Offline Frank Donnelly

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Fiorotti V6.3 Timer (G-Force Setting)
« on: December 23, 2019, 08:54:07 AM »
I was very successful in setting up a v4.4 timer following the thread "Another Dog another 'Tric, Fiorotti V4.4 Timer with Accelerometer". Since it's been over 120 days since anyone posted in that thread I'm starting a new one for this question. I purchased a v6.3 timer and have found some additional configuration settings. Some are obvious like the Landing Gear, and the RPM setup for an additional motor. However, there is one listed called G-Force which I have no idea of it's purpose. The setting is defaulted to .74G.
Does anyone have any experience using this option that can explain how it works, and perhaps the initial settings? 
Thanks,
Frank

Offline Rogerio Fiorotti

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Re: Fiorotti V6.3 Timer (G-Force Setting)
« Reply #1 on: December 23, 2019, 09:21:38 AM »
Hi Frank,

The initial value 0.74G is bench calibrated, activating to a setting greater than 5% will require flight calibration within the first 4 laps after takeoff, the LED will flash rapidly during calibration and you should keep the aircraft as stable as possible in flight. level. A new value will be informed in G's of centripetal force.

The function of G_Force is to change the engine RPM with varying centripetal force, in some cases it may not satisfy the reduction in RPM downhill.

New calibration is required whenever changing the engine's RPM "SET_RPM" and is automatic.

I advise you initially to set to OFF and use the g_Force function after everything is ok.

Rogerio.

Offline Frank Donnelly

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Re: Fiorotti V6.3 Timer (G-Force Setting)
« Reply #2 on: December 23, 2019, 12:53:34 PM »
Hi Rogerio,
Thanks for your quick reply.
So I turn it off until everything else is set to my satisfaction. When/if I turn it back on I understand it will take 4 laps to calibrate. At that point what would we be looking for in terms of performance? Is it supposed to increase RPM if there is a loss in line tension, such as passing through the upwind side of the circle on a windy day? Does it have any impact overhead, say at the top of the hourglass, or appex of a wing over?
Thanks,
Frank

Offline Fred Underwood

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Re: Fiorotti V6.3 Timer (G-Force Setting)
« Reply #3 on: December 23, 2019, 06:18:18 PM »
I flew the original 6.x, without G-force.  The 6.3 with G-force turned off took the same settings.  If you are transitioning from a V4.4, you will realize that the numeric values of settings are different, though the functions very similar.  A reasonable start for numbers is for Nose Up to be off.  You could use Nose up at the similar to V4.4, but I suggest off.  I know some that use Nose up more than sensitivity, and if that is the case, use it as you like.

Try sensitivity in the 20 range and say 80ish more PWM of throttle for Max and maybe 100 down for Min.

G-force off as mentioned.

I don't notice much/any difference in level flying on or off.

When you start with G-force, try about 20.  At that I could definitely feel it but not overpowering.  G-force is additional acceleration, no additional deceleration. So when you start using it, think of backing down Max, and possibly Sensitivity.  But backing down Sensitivity may lessen deceleration.

G-force will mostly change overhead maneuvers, that can include wingover.  I also found or imagined some changes in some of more angular maneuvers.  I didn't use G-force during the past season as I was happy with using Sensitivity, Max and Min, and was too much of an old dog to learn a new trick.  I have now used it for about 50 flights and am getting used to it.  In 0 - 5 mph I like it well.  I can definitely feel that G-force gives some acceleration overhead.  My only flying now is in 45° damp air.  Most of those days have been no/low wind.  Weather is otherwise wind and rain.  When I used it in the wind, I wasn't as happy.  But I didn't readjust sensitivity and RPM to get best use.  Since G-force gives acceleration, you may be able to slightly lower RPM, and overall, could use a little less battery.

Interesting finding using G-force.  It will calibrate, and then if you scroll through the timer settings to change a function, look at the G-force.  I fly at about 2.95 with little variation.  Today, I was a little slow and a little slack after adjusting the throttle.  Interesting G-force was 2.86.  I added a little throttle and lap and line tension improved. and G-force was 2.93.  Not suggesting that using the number helps much, since you only see it change after a calibration change, usually an RPM change, after the fact.  It confirms what you should already know.

Fred
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Offline Frank Donnelly

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Re: Fiorotti V6.3 Timer (G-Force Setting)
« Reply #4 on: December 24, 2019, 11:33:55 AM »
Thanks Fred
I will follow your advise. So what takes place in windy conditions that makes the G-Force less appealing to you?

Offline Fred Underwood

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Re: Fiorotti V6.3 Timer (G-Force Setting)
« Reply #5 on: December 24, 2019, 11:40:18 AM »
Old dog didn't want to learn....

I got the feeling that G-force was adding more acceleration than I wanted, and probably could have taken time to adjust all of the parameters to solve that but it was already working well without G-force.  Now, out of contest season, I would revisit that.  I already found that I decrease base RPM and maybe sensitivity in wind, so didn't need more acceleration of G-force, but again, maybe just all adjustments to learn.
Fred
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Offline Fred Underwood

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Re: Fiorotti V6.3 Timer (G-Force Setting)
« Reply #6 on: January 11, 2020, 01:40:51 PM »
Frank, a little more information.  I have about 20 more flights in winds 13 - 15 mph with normal gusts and direction changes.  G-force works fine and helps overhead in particular.  In overhead maneuvers, it seems to give a little more acceleration than with sensitivity alone.  You could turn up sensitivity and achieve similar overhead acceleration, but then probably have more acceleration than you wanted in non-overhead maneuvers.  Another tool to use to adjust to your own style and comfort. It seems to work well.

The G-force component has to be calibrated with speed change and is set up to do that when you change rpm.  If not using G-force (turned off), the timer is calibrated when aligned in the plane and does not need re-calibration for speed change as with V4.4.  My limited understanding, in this timer "sensitivity" acts with acceleration and G-force with change in centripedal force.  In this case, designed to help mostly overhead by algorithms used.  But, I claim no engineering or programming expertise :-)
« Last Edit: January 11, 2020, 09:15:01 PM by Fred Underwood »
Fred
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